<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/index.css">
</head>

<body>
    <div class="menu-wrap">
        <div class="main">
            <ul class="main-list">
                <li class="main-item active">
                    <a href="#">菜单1</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单2</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单3</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单4</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单5</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单6</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单7</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单8</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单9</a>
                </li>
                <li class="main-item">
                    <a href="#">菜单10</a>
                </li>
            </ul>
        </div>
        <div class="sub hide">
            <ul class="sub-list">
                <li class="sub-item">子菜单1</li>
                <li class="sub-item">子菜单2</li>
                <li class="sub-item">子菜单3</li>
                <li class="sub-item">子菜单4</li>
                <li class="sub-item">子菜单5</li>
                <li class="sub-item">子菜单6</li>
                <li class="sub-item">子菜单7</li>
                <li class="sub-item">子菜单8</li>
                <li class="sub-item">子菜单9</li>
                <li class="sub-item">子菜单10</li>
            </ul>
        </div>
    </div>
    <script src="js/utils.js"></script>
    <script src="js/index.js"></script>
</body>

</html>